INTEGRATED NUTRIENT MANAGEMENT STUDIES IN CHINA ASTER [Callistephus chinensis (L.) Nees.]
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Date
2012-08
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University of Horticultural Sciences, Bagalkot (COLLEGE OF HORTICULTURE, MUDIGERE)
Abstract
A field experiment was conducted to know the effect of “Integrated
Nutrient Management Studies in China aster [Callistephus chinensis (L.)
Nees.]” in the Department of Floriculture and Landscape Architecture, at
College of Horticulture Mudigere during rabi season of 2011-2012. The
experiment was laid out in randomized complete block design with 3
replications and 11 treatment combinations viz., T1:100% RDF,
T2:Azospirillum +75% RD`N’ +100% RD`P’ and K, T3: PSB+75%
RD’P’+100% RD’N & K, T4: Azospirillum+ FYM+ 75% NPK, T5:Azospirillum
+VC + 75% NPK, T6: PSB+ FYM + 75% NPK, T7: PSB+ VC +75% NPK,
T8:Azospirillum+ PSB+ 75% N&P +100% RD`K’, T9:Azospirillum
+PSB+FYM +75% NPK, T10: Azospirillum+ PSB +VC +75%NPK,
T11:Azospirillum+ PSB+ FYM + VC+ 75% NPK. The treatments comprising
of inorganic fertilizers (NPK), organic manures (FYM & VC) and
biofertilizers (Azospirillum & PSB) in cv. Kamini. The treatment receiving
Azospirillum + PSB + FYM + VC + 75% recommended NPK recorded the
highest plant height (54.67 cm), number of leaves (103.3), leaf area
(15.83 dm2), total dry weight of plant (43.26 g) and yield attributes such
as flower yield (11.73 t/ha) and seed yield (4.61 q/ha). Significantly
higher available nutrients in soil (N-227.00, P2O5-47.33 and K2O-177.67
kg/ha) and maximum NPK per cent content by plant parts were recorded
in treatment receiving Azospirillum +PSB +FYM +VC +75% recommended
NPK. The same treatment also recorded significantly higher quality
parameters such as stalk length (25.08 cm), flower diameter (4.87 cm)
and vase life of cut flowers (7.04 days). The economic analysis clearly
indicated that net returns and benefit cost ratio was found highest in the
same treatment (T11) combination (Rs. 1, 22,264/ha and 2.74
respectively).